# every

`import { every } from "destack:simulation/scenario";`

Create a trigger that fires once per `calls` matching hits.

```ds title="every"
export function every(calls: uint64, on?: EventKind | undefined): Trigger
```

[language/library/src/simulation/scenario/trigger.ds:83:85](https://github.com/destack-sh/destack/blob/main/language/library/src/simulation/scenario/trigger.ds#L83-L85)